Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8003914 | Butt welding system of steel plate and butt welding method of steel plate | Masahiro Nishio, Masaki Tanzawa, Masako Hida, Takayuki Shimizu, Keiichi Kashiwabara | 2011-08-23 |